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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(4)
Plague/Virus:(4)
Climate Chaos:(9)
Resource Depletion: (7)
Biology Breach:(14)
Recovery:(4)
This Week's Top Ten Very Scary Tags:
climate impacts  ~ contamination  ~ ecosystem interrelationships  ~ carbon emissions  ~ water issues  ~ ocean warming  ~ pandemic  ~ toxic water  ~ invasive species  ~ capitalist greed  ~ airborne pollutants  



ApocaDocuments (4) matching "ocean warming" from this week
[see full week] ~ [see all stories tagged "ocean warming"]
Sat, Aug 15, 2009
from Canwest News:
Experts: Arctic ice experiencing severe summer retreat
As Prime Minister Stephen Harper heads north next week for what's become his annual summer visit to the Arctic, he will encounter a world scientists believe is in the midst of an unprecedented and irreversible transformation, where retreating sea ice and related environmental changes are radically reshaping the region's future.... In the upcoming days, researchers from around the world will reassess the state of the Arctic Ocean ice cover and gauge whether this summer's retreat -- already viewed as another "extreme" thaw -- will surpass the 2007 meltdown that shocked even veteran observers of the polar realm.... [T]he biggest floes now jamming the fabled Arctic shipping corridor are southward-floating, orphaned chunks of the thickest, oldest "multi-year" ice mass that has been steadily disintegrating -- in North America, Europe and Asia -- along the edges of the central Arctic Ocean.... The region is, Howell told Canwest News Service, "past the 'tipping-point,'" when increasing expanses of darker, open water absorb ever more heat and the diminished ice cover -- normally able to reflect sunlight because of its lighter surface -- melts more quickly. ...


It's freakin' chemistry and physics, you idiot deniers!

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Fri, Aug 14, 2009
from National Oceanographic Centre, via EurekAlert:
Nitrogen fixation and phytoplankton blooms in the southwest Indian Ocean
Nitrogen-fixing bacteria convert atmospheric nitrogen into nitrogen compounds that organisms can then use as food. This process is thought to be important in areas of the ocean where nitrogen-based nutrients are otherwise in short supply, and the researchers confirm that this is indeed the case in the region south of Madagascar. But there were some surprises. Previously, it has been thought that the large-scale autumn bloom that develops in this region is driven by nitrogen-fixing blue-green algae, or cyanobacteria, called Trichodesmium, colonies of which the researchers found to be abundant. However, the 2005 bloom was dominated by a diatom -- a type of phytoplankton -- the cells of which play host to another nitrogen-fixing cyanobacterium called Richella intracellularis, with [the blue-green algae] Trichodesmium apparently playing second fiddle.... Diatoms have relatively large cells, and when they die they sink down the water column, carrying with them carbon that is ultimately derived from carbon dioxide drawn from the atmosphere though the process of photosynthesis. ...


Diatoms to the rescue?

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Wed, Aug 12, 2009
from Penn State, via EurekAlert:
Harbingers of increased Atlantic hurricane activity identified
Mann, working with [others,] reconstructed the past 1,500 years of hurricanes using two independent methods. They report their results in today's (Aug. 13) issue of Nature. One estimate of hurricane numbers is based on sediment deposited during landfall hurricanes.... The other method used a previously developed statistical model for predicting hurricane activity based on climate variables.... Both hurricane reconstructions indicate similar overall patterns and both indicate a high period of hurricane activity during the Medieval Climate Anomaly around AD 900 to 1100. "We are at levels now that are about as high as anything we have seen in the past 1,000 years," said Mann.... "It seems that the paleodata support the contention that greenhouse warming may increase the frequency of Atlantic tropical storms," said Mann. "It may not be just that the storms are stronger, but that there are there may be more of them as well." ...


As if the past was any predictor of the future.

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Tue, Aug 11, 2009
from ARC Center, via ScienceDaily:
Humans 'Damaging The Oceans' In Profound Ways
Man-made carbon emissions "are affecting marine biological processes from genes to ecosystems over scales from rock pools to ocean basins, impacting ecosystem services and threatening human food security," ... rates of physical change in the oceans are unprecedented in some cases, and change in ocean life is likely to be equally quick. These include changes in the areas fish and other sea species can inhabit, invasions, extinctions and major shifts in marine ecosystems.... Man-made carbon emissions are now above the 'worst case' scenario envisioned by the Intergovernmental Panel on Climate Change (IPCC), causing the most rapid global warming seen since the peak of the last Ice Age. At the same time the carbon is acidifying the oceans, with harmful consequences for certain plankton and shellfish. ...


Whoops. Our bad. How do you hit Restart on this game?

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